package com.ruoyi.framework.config;

import com.ruoyi.common.utils.Threads;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.*;

/**
 * 线程池配置
 *
 * @author ruoyi
 **/
@Configuration
public class ThreadPoolConfig {
    // 核心线程池大小
    private final int corePoolSize = 50;

    @Bean(name = "threadPoolTaskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // 最大可创建的线程数
        int maxPoolSize = 200;
        executor.setMaxPoolSize(maxPoolSize);
        executor.setCorePoolSize(corePoolSize);
        // 队列最大长度
        int queueCapacity = 1000;
        executor.setQueueCapacity(queueCapacity);
        // 线程池维护线程所允许的空闲时间
        int keepAliveSeconds = 300;
        executor.setKeepAliveSeconds(keepAliveSeconds);
        // 线程池对拒绝任务(无线程可用)的处理策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        return executor;
    }

    /**
     * 执行周期性或定时任务
     */
    @Bean(name = "scheduledExecutorService")
    protected ScheduledExecutorService scheduledExecutorService() {
        return new ScheduledThreadPoolExecutor(corePoolSize,
                new BasicThreadFactory.Builder().namingPattern("schedule-pool-%d").daemon(true).build(),
                new ThreadPoolExecutor.CallerRunsPolicy()) {
            @Override
            protected void afterExecute(Runnable r, Throwable t) {
                super.afterExecute(r, t);
                Threads.printException(r, t);
            }
        };
    }

    @Bean
    public ThreadPoolExecutor threadPoolExecutor(
            @Value("${thread.pool.coreSize}") Integer coreSize,
            @Value("${thread.pool.maxSize}") Integer maxSize,
            @Value("${thread.pool.keepalive}") Integer keepalive,
            @Value("${thread.pool.blockQueueSize}") Integer blockQueueSize
    ) {
        ThreadPoolExecutor executor = new ThreadPoolExecutor(
                coreSize,
                maxSize,
                keepalive,
                TimeUnit.SECONDS,
                new ArrayBlockingQueue<>(blockQueueSize),
                Executors.defaultThreadFactory(),
                new ThreadPoolExecutor.AbortPolicy()
        );
        executor.prestartCoreThread();
        return executor;
    }
}
